Window-ventilator.



C. A. EHICKSON.

WINDOW VENTILATOR.

APPLICATION FILED MAR. 23. 1916.

1,215,131. Patented Feb. 6,1917.

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WINDOVT-VENTILATOR.

Application filed March 23, 1916.

To all whom it may concern:

Be it known that I, CrrAnLEs A. ERICK- SON, a citizen of the United States, and a resident of Cashton, in the county of Monroe and State of Wisconsin, have invented a new and Improved WindowVentilator, of which the following is a full, clear, and exact description.

This invention relates to window ventilators of that type disposed between the window sill and bottom of the l wer sash, so that when the latter is raised a few inches air can enter a room between the meeting portions of the upper and lower sashes.

The invention has for its general objects to improve and simplify the construction of ventilators of this character so as to be reliable and efiicient in use, comparatively inexpensive to manufacture, and so designed as to be adjustable to windows of diiferent widths.

A more specific object of the invention is the provision of a ventilator which is applied to the bottom of the lower sash, as distinguished from those ventilators which are fastened to the window frame or sill, and consequently, when the lower sash is raised a few inches the ventilator automatically moves into operative position, the ventilator having extensible end sections which render it adaptable for different-size window sashes.

With such objects in view, and others which will appear as the description proceeds, the invention comprises various novel features of construction and arrangement of parts which will be set forth with particularity in the following description and claim appended hereto.

In the accompanying drawing, which illustrates one embodiment of the invention and wherein similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a side view of a window with the ventilator applied to the lower sash thereof and the lower sash slightly raised to ventilating position;

Fig. 2 is a vertical section of the window;

Fig. 3 is an enlarged elevation of the ventilator contracted to its smallest length; and

Fig. 4: is a detail sectional view of the ventilator, but showing the ventilator applied to a window sash and in the position occu pied when the window sash is closed.

Referring to the drawing, 1 designates a window frame, 2 the lower sash, 3 the upper sash, and 4 the window sill. The ventilator Specification of Letters Patent.

Patented Feb. 6, 1917?.

Serial No. 86,085.

A is a strip-like structure which is applied to the lower bar 5 of the sash 2 to cooperate with the window sill for closing the space left when the lower sash is raised a few inches to provide a ventilating opening between the upper and lower sashes, as shown in Fig. 2 at 6. The ventilator is preferably extensible, to be adapted for windows of different widths, and therefore it comprises a main central section 7 and end sections 8, the sections being preferably, although not necessarily, strips of metal, and the main section has its upper and lower edges bent into guide flanges 9 for slidably retaining the end sections. The end sections have longitudinal slots 10 through which extend clamping bolts 11 carried by the main sec tion so as to permit the end sections to be clamped in any desired position. The main section 7 has at its upper edge hinges 12 that are fastened to the lower bar 5 of the sash 2 at the outside of the said bar. The bottom edge of the ventilator is adapted to rest on the window sill when the sash is raised, as shown in Figs. 1 and 2,but when the sash is closed the ventilator rests almost Hat on the window sill, as shown in Fig. 4. The ventilator is prevented from blowing inwardly under the sash when the latter is raised, so that the ventilator forms a complete stop against drafts entering a room from under the lower sash. When the sash 2 1s raised, the ventilator automatically shifts from the position shown in Fig.4 to

that shown in Fig. 2, since the ventilator iscarried by the sash and moves therewith. In lowering the sash the ventilator drops back to its inoperative position, as shown in Fig. 4.

From the foregoing description taken in connection with the accompanying drawing. the advantages of the construction and method of operation will be readily understood by those skilled in the art to which the invention appertains, and while I have described the principle of operation, together with the device which I now consider to be the best embodiment thereof, I desire to have it understood that the device shown is merely illustrative and that such changes may be made when desired as fall within the scope of the appended claim.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

The combination of a window frame and sash therein, Witha Ventilator carried wholly' In testimony whereof I have signed my by the sash and movably mounted on the botname to this specification in the presence of tom bar of the sash on the outside thereof two subscribing Witnesses.

and adapted to cooperate with the sill of the CHARLES A. ERICKSON. 21 Window frame to close the opening left by Witnesses: V

the sash when raised less than the height P, J. HEGGE,

of the ventilator. H. O. MOEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. G. 

